ARLINGTON - The Cowboys played all four of their quarterbacks for the first time this preseason in Saturday’s game against the Texans.

After two series, starter Dak Prescott was done but the No. 2 job remained in the hands of Cooper Rush. Rush completed 15 of 25 passes for 173 yards with no touchdowns. Rush did lead the offense to a scoring drive, a 36-yard field goal from Brett Maher with 2:32 left in the first half.

"I actually thought he played the best I've seen him play tonight," Cowboys owner Jerry Jones said of Rush after the game.

The Cowboys inserted No. 3 quarterback Mike White to start the second half and he led them to his first scoring drive of the preseason. White connected on a 12-yard touchdown pass to backup running back Jordan Chunn to give the Cowboys a commanding 34-0 lead. When White’s night was over, he completed six of nine passes for 56 yards with the touchdown pass. After completing his first six passes, White missed his next here passes before giving away to fourth-string quarterback Taryn Christion at the start of the fourth quarter.

Rush has taken control of the No. 2 quarterback job, leaving White a distant third. Christion was getting snaps on the offense as a wide receiver/halfback during practices. But the Cowboys wanted to give Christion a chance to play quarterback in Saturday’s game.

Offensive line penalties: Of the eight first half penalties by the Cowboys, five were from the offensive line. Connor Williams, Brandon Knight, Jake Campos and Cam Fleming were penalized for holding. Fleming was also flagged for a false start. Coming into the game, the Cowboys had been penalized 16 times for 147 yards.

Sean Lee suits up : Strong side linebacker Sean Lee missed a majority of training camp with a sprained knee. Lee was cleared to play in Saturday's game but didn't in the first half.

Joe Thomas started with the first-team in the base defense as Lee watched from the sidelines.

Briefly: Houston starting running back Lamar Miller left the game on a cart after getting hurt on his first carry of the preseason. Cowboys defensive tackle Maliek Collins made a hard tackle on Miller resulting in a one-yard loss. ... DE Taco Charlton left the game twice after getting nicked up in the second quarter.

Calvin Watkins. This is my 10th year covering the Dallas Cowboys. This is special for me because I've never reached the 10th year in anything, other than living. So I guess that's something to be proud of.